WO2022014053A1 - Dispositif d'antenne et dispositif d'antenne réseau - Google Patents

Dispositif d'antenne et dispositif d'antenne réseau Download PDF

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Publication number
WO2022014053A1
WO2022014053A1 PCT/JP2020/027913 JP2020027913W WO2022014053A1 WO 2022014053 A1 WO2022014053 A1 WO 2022014053A1 JP 2020027913 W JP2020027913 W JP 2020027913W WO 2022014053 A1 WO2022014053 A1 WO 2022014053A1
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WO
WIPO (PCT)
Prior art keywords
antenna
microstrip
antenna device
plane
microstrip antennas
Prior art date
Application number
PCT/JP2020/027913
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English (en)
Japanese (ja)
Inventor
準 後藤
徹 深沢
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2021562063A priority Critical patent/JP7106019B2/ja
Priority to PCT/JP2020/027913 priority patent/WO2022014053A1/fr
Publication of WO2022014053A1 publication Critical patent/WO2022014053A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path

Definitions

  • the present disclosure relates to an antenna device and an array antenna device including a plurality of microstrip antennas.
  • Non-Patent Document 1 discloses an antenna device including a plurality of microstrip antennas.
  • the microstrip antenna is an antenna that operates in TM10 mode. Assuming that the direction orthogonal to the plane on which each microstrip antenna is placed is 0 degrees and the direction parallel to the plane is 90 degrees, the radiation direction of the electromagnetic waves from each microstrip antenna is 30 to 45 degrees. Is the direction of.
  • Non-Patent Document 1 has a problem that electromagnetic waves cannot be radiated in a direction parallel to the plane on which each microstrip antenna is arranged.
  • the present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to obtain an antenna device capable of radiating electromagnetic waves in a direction parallel to a plane in which each microstrip antenna is arranged. do.
  • the antenna device has a first plane and a second plane, and is aligned with a dielectric substrate having a ground conductor on the second plane and a first plane on the dielectric substrate. It is arranged in and is equipped with a plurality of microstrip antennas operating in TM20 mode.
  • electromagnetic waves can be radiated in a direction parallel to the plane in which each microstrip antenna is arranged.
  • FIG. 6A is an explanatory diagram showing the electromagnetic field simulation result of the radiation pattern on the yz plane
  • FIG. 6B is an explanatory diagram showing the electromagnetic field simulation result of the radiation pattern on the xz plane.
  • FIG. 1 It is a top view which shows the antenna device 1 which concerns on Embodiment 2.
  • FIG. 1 is a plan view showing the antenna device 1 according to the first embodiment.
  • FIG. 2 is a cross-sectional view showing a cross section of C1-C2 in the antenna device 1 shown in FIG.
  • the antenna device 1 shown in FIG. 1 is arranged on a plane parallel to the xz plane in a three-dimensional space represented by the xyz coordinate axes.
  • the dielectric substrate 11 has a first plane 11a and a second plane 11b.
  • a ground conductor is provided on the second plane 11b of the dielectric substrate 11.
  • Four microstrip antennas 12-1 to 12-4 are arranged on the first plane 11a of the dielectric substrate 11.
  • four microstrip antennas 12-1 to 12-4 are arranged.
  • this is only an example, and it is sufficient that two or more microstrip antennas 12 are arranged.
  • the term “microstrip antenna 12” is used.
  • the microstrip antennas 12-1 to 12-4 are arranged in a row on the first plane 11a of the dielectric substrate 11.
  • the microstrip antennas 12-1 to 12-4 are antennas that operate in the TM20 mode, and emit electromagnetic waves in a direction parallel to the first plane 11a.
  • the electromagnetic wave from the microstrip antenna 12 is radiated in a direction parallel to the direction in which the microstrip antennas 12-1 to 12-4 are lined up in a row.
  • the intervals D2, D3, and D4 of the respective arrangements in the microstrip antennas 12-1 to 12-4 are the lengths of the wavelength ⁇ of the electromagnetic wave.
  • the intervals D2, D3, and D4 are not limited to those that exactly match the length of the wavelength ⁇ of the electromagnetic wave, and may be different from the length of the wavelength ⁇ within a range that does not cause a practical problem.
  • the feeding unit 13-n feeds electromagnetic waves to the microstrip antenna 12-n via the feeding line 14-n.
  • One end of the feeding line 14-n is connected to the feeding section 13-n, and the other end of the feeding line 14-n is connected to the microstrip antenna 12-n.
  • the electromagnetic wave output from the feeding unit 13-n propagates in the feeding line 14-n.
  • the slit 15-n is a gap between the microstrip antenna 12-n and the feeding line 14-n.
  • the slit 16-n is a gap between the microstrip antenna 12-n and the feeding line 14-n.
  • the conductor wall 17 is arranged in the direction in which the microstrip antennas 12-1 to 12-4 are arranged in a row, and reflects the electromagnetic waves radiated from each of the microstrip antennas 12-1 to 12-4.
  • the position where the conductor wall 17 is arranged is one-fourth of the wavelength ⁇ from the center of the microstrip antenna 12-1 arranged at the end of the microstrip antennas 12-1 to 12-4. It is a position separated by the sum of the length and the length that is an integral multiple of the length of half of the wavelength ⁇ . That is, the distance D1 from the center of the microstrip antenna 12-1 to the conductor wall 17 is expressed by the following equation (1).
  • m is an integer of 1 or more.
  • the conductor wall 18 is provided to prevent electromagnetic waves radiated from each of the microstrip antennas 12-1 to 12-4 from leaking in the + x direction, which is a direction parallel to the x-axis.
  • the conductor wall 19 is provided to prevent electromagnetic waves radiated from each of the microstrip antennas 12-1 to 12-4 from leaking in the ⁇ x direction, which is a direction parallel to the x-axis.
  • the conductor wall 20 is provided to prevent electromagnetic waves radiated from each of the microstrip antennas 12-1 to 12-4 from leaking in the + y direction, which is a direction parallel to the y-axis.
  • the conductor wall 21 is provided to operate each of the microstrip antennas 12-1 to 12-4 as a patch antenna.
  • the conductor walls 17 to 21 form a space including the dielectric substrate 11 and the microstrip antennas 12-1 to 12-4.
  • the opening 22 is a boundary surface with the external space of the antenna device 1, and electromagnetic waves radiated from each of the microstrip antennas 12-1 to 12-4 are radiated to the outside from the opening 22.
  • D5 is the distance from the center of the microstrip antenna 12-4 to the opening 22, and the distance D5 may be any distance.
  • a slit 15-n and a slit 16-n are provided.
  • the resistance value which is the actual part of the input impedance of the antenna device 1 can be adjusted.
  • the reactance value, which is an imaginary part of the input impedance of the antenna device 1 can be adjusted. .. Therefore, in the antenna device 1 shown in FIG. 1, the reflected wave returning to the feeding unit 13-n can be reduced by adjusting the respective sizes of the slit 15-n and the slit 16-n. Adjusting the size means adjusting the dimension in the x direction and the dimension in the z direction.
  • the microstrip antenna 12-n is an antenna that operates in the TM20 mode, and when an electromagnetic wave is supplied from the feeding unit 13-n via the feeding line 14-n, the microstrip antenna 12-n is in a direction parallel to the first plane 11a. It emits electromagnetic waves. That is, the microstrip antenna 12-n radiates electromagnetic waves in the + z direction and the ⁇ z direction.
  • FIG. 3 is an explanatory diagram showing an operation image of the microstrip antenna 12-n operating in the TM20 mode.
  • the microstrip antenna 12-n receives an electromagnetic wave from the feeding unit 13-n via the feeding line 14-n, electric field vectors 31 and 32 are generated at both ends of the microstrip antenna 12-n.
  • the electric field vector 31 and the electric field vector 32 are electric field vectors having the same phase, and the directions of the electric field vectors 31 and 32 are the + y direction.
  • an electric field vector 33 having a phase opposite to that of the electric field vectors 31 and 32 is generated in the central portion of the microstrip antenna 12-n.
  • the direction of the electric field vector 33 is the ⁇ y direction.
  • an electric field vector 34 and an electric field vector 35 are generated as axis-symmetrical electric field vectors with respect to the central axis 12a of the microstrip antenna 12-n.
  • the electromagnetic wave radiated in the radial direction 36 from each microstrip antenna 12-n is radiated to the outside through the opening 22.
  • the electromagnetic wave radiated from each microstrip antenna 12-n in the radial direction 37 is reflected by the conductor wall 17.
  • the electromagnetic wave after reflection by the conductor wall 17 is radiated to the outside from the opening 22. Since the distance D1 from the center of the microstrip antenna 12-1 to the conductor wall 17 is the distance represented by the equation (1), the electromagnetic wave after reflection by the conductor wall 17 and the microstrip antenna 12 are according to the principle of the mirror image.
  • the electromagnetic wave radiated from the opening 22 to the outside is strengthened without the electromagnetic wave radiated from ⁇ n in the radial direction 36 weakening each other.
  • the conductor walls 18 to 20 are provided to make the surrounding environment of the antenna device 1 less susceptible to the influence of electromagnetic waves, and to reflect the electromagnetic waves radiated from the microstrip antenna 12-n toward the opening 22 side. It is not provided. Therefore, the conductor walls 18 to 20 do not necessarily have to be provided in the antenna device 1.
  • FIG. 4 is an explanatory diagram showing an electromagnetic field simulation result of the reflection characteristic in the antenna device 1 shown in FIG.
  • the relative permittivity of the dielectric substrate 11 is 3.0
  • the thickness of the dielectric substrate 11 is 0.026 ⁇
  • the distance D1 is 3 ⁇ / 4.
  • electromagnetic field simulation is performed assuming that electromagnetic waves are supplied to each of the microstrip antennas 12-1 to 12-4 from one feeding unit 41 via the feeding line 42. Is going.
  • FIG. 5 is a plan view showing an antenna device 1 in which an electromagnetic field simulation of reflection characteristics is performed. In FIG.
  • the horizontal axis represents the normalized frequency and the vertical axis represents the amplitude of the reflectance coefficient.
  • the curve 51 shown in FIG. 4 shows the reflection characteristics of the antenna device 1, and there is a specific band of 1% or more in which the amplitude of the reflection coefficient is ⁇ 10 dB or less.
  • FIG. 6 is an explanatory diagram showing an electromagnetic field simulation result of a radiation pattern at the center frequency of the antenna device 1 shown in FIG.
  • FIG. 6A shows the electromagnetic field simulation result of the radiation pattern on the yz plane
  • FIG. 6B shows the electromagnetic field simulation result of the radiation pattern on the xz plane.
  • the horizontal axis represents an angle and the vertical axis represents a gain.
  • the curve 52 shows the main polarization in the yz plane, and the main polarization in the yz plane represents the y-direction component.
  • the curve 53 shows the cross-polarized wave in the yz plane, and the cross-polarized wave in the yz plane represents the x-direction component.
  • the curve 54 shows the main polarization in the xz plane, and the main polarization in the xz plane represents the y-direction component.
  • the curve 55 shows the cross-polarized wave in the xz plane, and the cross-polarized wave in the xz plane represents the x-direction component.
  • the cross-polarized wave in the yz plane is ⁇ 20 dB or less with respect to the peak gain of the main polarized wave within the range of ⁇ 90 degrees.
  • the crossed polarization in the xz plane is ⁇ 20 dB or less with respect to the peak gain of the main polarization within the range of ⁇ 90 degrees. Therefore, it can be seen that the antenna device 1 shown in FIG. 1 can radiate an electromagnetic wave in a direction parallel to the first plane 11a of the dielectric substrate 11.
  • the dielectric substrate 11 having the first plane 11a and the second plane 11b and having the ground conductor provided on the second plane 11b, and the first in the dielectric substrate 11.
  • the antenna device 1 is configured to include a plurality of microstrip antennas 12-1 to 12-4 which are arranged in a row on the plane 11a of 1 and operate in the TM20 mode. Therefore, the antenna device 1 can radiate electromagnetic waves in a direction parallel to the plane in which each microstrip antenna is arranged.
  • the microstrip antennas 12-1 to 12-4 are shown to have a square shape. However, this is only an example, and the shape of the microstrip antennas 12-1 to 12-4 may be, for example, an ellipse or a polygon other than a square.
  • the corner portions of the slits 15-1 to 15-4 and the slits 16-1 to 16-4 are shown to be at right angles. However, this is only an example, and each corner portion of the slits 15-1 to 15-4 and the slits 16-1 to 16-4 may be slightly rounded.
  • the minute roundness at the corner portion is applied by, for example, etching or drilling.
  • each of the microstrip antennas 12-1 to 12-4 radiates electromagnetic waves.
  • Polarizers may be arranged in the + z direction of the microstrip antennas 12-1 to 12-4. By arranging the polarizer, the antenna device 1 shown in FIG. 1 can be operated as a circularly polarized wave antenna.
  • the feeding unit 13-n may directly feed the electromagnetic wave to the microstrip antenna 12-n by using the RF connector.
  • the feeding line 14-n, the slit 15-n and the slit 16-n are unnecessary.
  • the electromagnetic wave may be supplied to the microstrip antenna 12-n by electromagnetic coupling to the microstrip antenna 12-n.
  • Another dielectric substrate is arranged on the second plane 11b side of the dielectric substrate 11, and the electromagnetic wave propagates to the microstrip line formed on the other dielectric substrate, whereby the microstrip line and the microstrip line are formed.
  • a configuration is conceivable in which the microstrip antenna 12-n is electromagnetically coupled.
  • the intervals D2, D3, and D4 of the respective arrangements in the microstrip antennas 12-1 to 12-4 are the lengths of the wavelength ⁇ of the electromagnetic wave.
  • FIG. 1 illustrates an example in which the antenna device 1 operates as a transmitting antenna. However, this is only an example, and the antenna device 1 can also operate as a receiving antenna.
  • each of the microstrip antennas 12-1 to 12-4 and the feeding portions 13-1 to 13-4 are formed on the first flat surface 11a of the dielectric substrate 11 as conductor patterns. I am assuming what you are doing. However, this is only an example, and each of the microstrip antennas 12-1 to 12-4 and the feeding portions 13-1 to 13-4 is formed of a metal conductor, and a spacer is used instead of the dielectric substrate 11. You may.
  • Embodiment 2 In the second embodiment, an antenna device 1 including a feeding line 14 for feeding electromagnetic waves to any one of the microstrip antennas 12-1 to 12-4 will be described.
  • FIG. 7 is a plan view showing the antenna device 1 according to the second embodiment.
  • the microstrip antennas 61-1 to 61-3 are antennas that operate in the TM20 mode.
  • the microstrip antennas 12-1 and the microstrip antennas 61-1 to 61-3 are arranged in a row on the first plane 11a of the dielectric substrate 11.
  • the electromagnetic waves from the microstrip antennas 12-1 and the microstrip antennas 61-1 to 61-3 are in a direction parallel to the direction in which the microstrip antennas 12-1 and the microstrip antennas 61-1 to 61-3 are lined up in a row. Is radiated to.
  • the distance between the arrangements of the microstrip antenna 12-1 and the microstrip antenna 61-1 is D2, and the distance between the arrangements of the microstrip antenna 61-1 and the microstrip antenna 61-2 is D3.
  • the distance between the microstrip antenna 61-2 and the microstrip antenna 61-3 is D4. Since the feeding line is not connected to the microstrip antennas 61-1 to 61-3, the microstrip antennas 61-1 to 61-3 are not excited.
  • the microstrip antennas 61-1 to 61-3 are interconnected with the microstrip antenna 12-1 between the elements. Therefore, the microstrip antennas 61-1 to 61-3 are excited by the excitation of the microstrip antenna 12-1. When the microstrip antennas 61-1 to 61-3 are excited, they emit electromagnetic waves in a direction parallel to the first plane 11a.
  • the intervals between the arrangements are D2, D3, and D4, and the intervals D2, D3, and D4 may be the length of the wavelength ⁇ of the electromagnetic wave, but the wavelength ⁇ of the electromagnetic wave. It may be shorter than the length. If the intervals D2, D3, and D4 are shorter than the length of the wavelength ⁇ of the electromagnetic wave, the mutual coupling between the elements of the microstrip antenna 12-1 and the microstrip antennas 61-1 to 61-3 can be strengthened.
  • the microstrip antenna 12-1 is arranged at the position farthest from the opening 22. ..
  • the microstrip antenna 12-1 may be arranged at a position other than the position farthest from the opening 22, for example, as shown in FIG.
  • FIG. 8 is a plan view showing another antenna device 1 according to the second embodiment.
  • the microstrip antenna 61-1 is arranged at a position other than the position farthest from the opening 22. Has been done.
  • the microstrip antenna 12-1 is located at the second farthest position from the opening 22.
  • Embodiment 3 an array antenna device in which a plurality of antenna devices 1 shown in FIGS. 1, 7 or 8 are arranged on the same plane will be described.
  • FIG. 9 is a plan view showing the array antenna device according to the third embodiment.
  • a plurality of antenna devices 1 are arranged in a row on the same plane.
  • a plurality of antenna devices 1 may be arranged so that the radiation directions of the electromagnetic waves radiated from each of the plurality of antenna devices 1 are the same, or the electromagnetic waves radiated from each of the plurality of antenna devices 1 may be arranged.
  • a plurality of antenna devices 1 may be arranged so that the radial directions are different.
  • FIG. 10 is a plan view showing another array antenna device according to the third embodiment.
  • any combination of the embodiments can be freely combined, any component of the embodiment can be modified, or any component can be omitted in each embodiment.
  • the present disclosure is suitable for an antenna device and an array antenna device having a plurality of microstrip antennas.
  • 1 antenna device 11 dielectric substrate, 11a first plane, 11b second plane, 12-1 to 12-4 microstrip antenna, 12a central axis, 13-1 to 13-4 feeding part, 14-1 to 14-4 power supply line, 15-1 to 15-4 slit, 16-1 to 16-4 slit, 17 to 21 conductor wall, 22 opening, 31 to 35 electric field vector, 36, 37 radial direction, 41 power supply part, 42 power supply line, 51-55 curve, 61-1-61-3 microstrip antenna.

Abstract

Ce dispositif d'antenne (1) est configuré pour comprendre : un substrat diélectrique (11) qui présente un premier plan (11a) et un second plan (11b) et dans lequel un conducteur de terre est appliqué sur le second plan (11b) ; et une pluralité d'antennes microrubans (12-1) à (12-4) agencées en une rangée sur le premier plan (11a) du substrat diélectrique (11) et actionnées dans un mode TM20.
PCT/JP2020/027913 2020-07-17 2020-07-17 Dispositif d'antenne et dispositif d'antenne réseau WO2022014053A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2021562063A JP7106019B2 (ja) 2020-07-17 2020-07-17 アンテナ装置及びアレーアンテナ装置
PCT/JP2020/027913 WO2022014053A1 (fr) 2020-07-17 2020-07-17 Dispositif d'antenne et dispositif d'antenne réseau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/027913 WO2022014053A1 (fr) 2020-07-17 2020-07-17 Dispositif d'antenne et dispositif d'antenne réseau

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WO2022014053A1 true WO2022014053A1 (fr) 2022-01-20

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01248805A (ja) * 1988-03-30 1989-10-04 Shigeru Egashira マイクロストリップアンテナ
JPH06237114A (ja) * 1993-02-10 1994-08-23 Toyo Commun Equip Co Ltd フェーズドアレーアンテナ
JPH09130139A (ja) * 1995-11-02 1997-05-16 Mitsubishi Electric Corp アンテナ装置
CN108011183A (zh) * 2017-11-15 2018-05-08 电子科技大学 基于矩形贴片tm20模式的一维宽角度扫描相控阵
WO2019146042A1 (fr) * 2018-01-25 2019-08-01 三菱電機株式会社 Dispositif d'antenne
CN110854527A (zh) * 2019-11-07 2020-02-28 电子科技大学 基于超表面的双极化高性能宽带天线及其阵列

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2926929B1 (fr) * 2008-01-30 2010-03-19 Bouygues Telecom Sa Antenne imprimee presentant un diagramme bi-faisceaux

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01248805A (ja) * 1988-03-30 1989-10-04 Shigeru Egashira マイクロストリップアンテナ
JPH06237114A (ja) * 1993-02-10 1994-08-23 Toyo Commun Equip Co Ltd フェーズドアレーアンテナ
JPH09130139A (ja) * 1995-11-02 1997-05-16 Mitsubishi Electric Corp アンテナ装置
CN108011183A (zh) * 2017-11-15 2018-05-08 电子科技大学 基于矩形贴片tm20模式的一维宽角度扫描相控阵
WO2019146042A1 (fr) * 2018-01-25 2019-08-01 三菱電機株式会社 Dispositif d'antenne
CN110854527A (zh) * 2019-11-07 2020-02-28 电子科技大学 基于超表面的双极化高性能宽带天线及其阵列

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JPWO2022014053A1 (fr) 2022-01-20
JP7106019B2 (ja) 2022-07-25

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